Machine for making pulp-boards.



PATENTED AUG. 8, 1905.

F. E. KEYBS. MACHINE FOR MAKING PULP BOARDS.

APPLICATION FILED FEB. 10. 1904 N VE N TR 7 A Home ANDREW a. cmum co,Pncvo-umoanwnws. wnsnwmom :v c.

- them as shown in my UNITED STATES PATENT OFFICE.

MACHINE FOR MAKING PULP-BOARDS.

Specification of Letters Patent.

Patented Aug. 8, 1905.

Application filed February 10, 1904. Serial No. 192,950.

To all whom, it vncty concern:

Be it known that I, FRANK EUGENE KEYES, of New York city, in the countyof New York and State of New York, have invented certain new and usefulImprovementsin Machines for Making Pulp-Boards; and I do hereby declarethe following to be a full, clear, and eX- act description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to machines for making pulp boards or sheets madeup of layers of contrasting colors, so that the boards or sheets thusproduced will when machined, sandpapered, and polished present theappearance of natural wood having well-defined grains.

With these ends in view my invention consists in a plurality of molds,each adapted to take a layer of pulp from a vat, a windingroll, andmeans for stripping the layers of pulp from the molds and depositingthem on the winding-roll.

My invention further consists in two vats adapted to contain pulp ofcontrasting colors, a mold in each vat, a winding-roll, and means forstripping the layers of pulp from the two molds and depositing them ontothe winding-roll.

My invention further consists in the parts and combinations of parts, aswill be more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a diagrammatic view in sectionof a machine embodying my invention, and Fig. 2 is a similar view of amodification.

1 represents a vat divided into two compartments by a transversepartition 2, and 3 represents cylindrical molds--one for each vat-themolds being so located as to revolve in the vats and each take up alayer of fiber from the pulp contained in its vat. One of these vats isdesigned to contain the ordinary white pulp, while the other carries acolored pulp. These molds revolve in the direction indicated by thearrows and each deposits its layer of pulp on its couch-roll 4:, andboth couch-rolls deposit their continuous layers of pulp on thewinding-roll 5.

The molds, couch-rolls, and vat may be of any approved form; but Iprefer to construct Patent No. 692,862, granted February 11, 1902, or inmy pending application, Serial No. 192,949, filed February 10, 1904. Thedetails of construction, however, are not essential so long as they areconstructed and operate to take the pulp in a thin layer from the vatand deposit it on the couch-roll, the water or part thereof contained inthe pulp being removed during these operations by suction maintained inportions of the molds and couch-rolls.

With the apparatus thus described one couch-roll 4 deposits a continuouslayer of white or uncolored pulp on the winding-roll, while the otherdeposits on the white layer a continuous layer of colored pulp, thusproducing a wound cylinder made up of continuous layers of alternateWhite and colored pulp. This cylinder thus formed is severed andflattened out to form a sheet or board, and the latter when dried andfinished closely resembles natural wood with its grain regularlydisposed through same.

Instead of employing a couch-roll for each mold one couch-roll may be solocated to take the layers from both molds, and when so used the layerof pulp or fiber from one mold would be deposited on the layer of fibertaken up by the couch from the other mold, and thus become united beforebeing transferred to the winding-roll.

It is evident that changes in the construction and relative arrangementof the several parts might be made Without avoiding my invention, andhence I would have it understood that I do not restrict myself to theparticular construction and arrangement of parts shown and described;but,

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an apparatus for producing pulpboards, the combination with. twovats for containing pulp, and a suction-mold in each vat, of a singlewinding-roll located over the vats and cylindrical means intermediatethe molds and roll for taking the layers of pulp from the two molds anddepositing them on the, winding-roll.

2. In an apparatus for producing pulpboards, the combination with twovats and a suction-mold in each, of a suction couch-roll for each mold,and a winding-roll located over the vats and adapted to take the fiberdirectly from the couch-rolls.

3. The. method of producing pulp-board specification in the presence oftwo subscrib made up of layers of contrasting colors, coning Witnesses.sisting in simultaneously taking up a plurality of films of pulp, one ormore of Which are FRANK EUGENE colored, and depositing them on a windingWitnesses: v roll in the manner set forth. GEO. F. DOWNING,

In testimony whereof I have signed this S. G. NOTTINGHAM.

